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y = x²
x+2 = x²
-x² +x + 2 = 0
-(x² -x - 2) = 0
-(x-2)(x+1)= 0
x-2 = 0 --> x = 2
x+1 = 0 --> x = -1
L = ₋₁² ∫-x² + x + 2 dx = - ¹/₃ x³ + ¹/₂ x² + 2x|²₋₁
L = -¹/₃ (9) + ¹/₂(3) + 2(3)= 4¹/₂